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KMID : 0854720110310010020
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Korean Journal of Asthma, Allergy and Clinical Immunology
2011 Volume.31 No. 1 p.20 ~ p.26
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Variation of Dyspnea Perception in Repeatedly Hospitalized Patients with Asthma
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Seo Il-Kook
Choi In-Seon
Kim Sang-Hoon
Han Eui-Ryoung
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Abstract
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Background: Anti-asthma treatments correct impaired dyspnea perception. Objective: To investigate whether dyspnea perception in asthmatics vary whenever they are hospitalized.
Method: We retrospectively analyzed the medical records of 64 patients (32 men and 32 women) with acute asthma who were hospitalized at least twice and assessed using the Borg scale-based dyspnea perception score while breathing through an inspiratory muscle trainer at each admission. Poor perceiver was defined as a Borg score of ≤5 at the highest resistive load (HR) and HR-induced ΔBorg score of ≤3.
Result: Between the first and second admissions, the relationship of forced expiratory volume in 1 s (r=0.773, P ＜0.001) and the concordance of severity of asthma attack (κ=0.503, P＜0.001) were significant, but the relationship of HR-induced ΔBorg score and the concordance of poor perceivers were not. During the first admission, as lung function increased gradually, the HR-induced ΔBorg score became higher in poor perceivers (1.83±0.39→3.42±0.57→ 4.00±0.67, P=0.048).
Conclusion: Although asthmatic patients who suffered from a severe asthma attack tended to have a severe attack again at the following admission, dyspnea perception differs among the admissions. Impaired dyspnea perception during acute asthmatic attack would be correctable with anti-asthma treatments.
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KEYWORD
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Acute asthma, Dyspnea perception, Resistive Load
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